Optical Brightener OBS is an upgraded optical brightener, has a new foundational group, which makes it has better whiteness, better brightness and better weather ability and can be used for thermoplastics especially for PVC and phenyl ethylene as well as paints, coatings, printing inks...etc. It could be added to the polymers as pigment.
Specification
Assay:
98.0%min
Bulk density:
1.23g/cm3
Melting point:
202-208℃
Particle size:
60-200 meshes
Volatile content:
0.5% Max
Ash:
0.5%min.
Appearance:
yellowish green powder
Max. absorption wavelength:
375nm(in ethanol)

For more details, please contact us – Shangrila Enterprises Ltd. E-mail: tdpctw@gmail.com